Stylographic pen with the capillary passage cleaning means operable by hand or by shaking or contact

ABSTRACT

A STYLOGRAPHIC WRITING PEN HAVING A LONGITUDINALLY DISPLACEABLE WIRE IN THE CAPILLARY PASSAGE OF ITS PEN STYLUS WHEREBY IN REST POSITION THIS WIRE PROTRUDES THROUGH THE PEN TIP BOTTOM EITHER BY HAND OR BY LONGITUDINALLY SHAKING OF THE PEN OR BY RESTING OF THE PIN TIP ON THE WRITING SURFACE, THE WIRE CAN BE MOVED OR LESS REACTED INTO THE INK PASSAGEWAY.

Feb. 9, 1971 E. BOK 3,561,881

STYLCGRAPHIC PEN wITH THE CAPILLARY PASSAGE CLEANING MEANS OPEHABLE BY HAND 0R BY SHAKING CR CONTACT /Wf/raf? 50h/MPO 56K E. BoK Y 3,561,881 STYLOGRAPHIC PEN WITH THE CAPILLARY PASSAGE CLEANING Feb. 9, 1971 MEANS OPERABLE BY HAND OR BY SHAKING 0R CONTACT Filed May '7, 1969 3 Sheets-Sheet 2 Feb. 9, 1971 E. BOK 3,561,881

STYLOGRAPHIC PEN WITH THE CAPILLARY PASSAGE CLEANING MEANS OPERABLE BY HAND OR BY SHAKING OR CONTACT Filed May '7, 1969 5 Sheets-Sheet 5 United States Patent O1 STYLOGRAPHIC PEN WITH THE CAPILLARY PASSAGE CLEANING MEANS OPERABLE BY HAND OR BY SHAKING OR CONTACT Edward Bok, 819 Tucker Road, New Bedford, Mass. 02747 Filed May 7, 1969, Ser. No. 828,415 Int. Cl. B43k l /10 U.S. Cl. 401-258 14 Claims ABSTRACT OF THE DISCLOSURE A stylographic writing pen having a longitudinally displaceable wire in the capillary passage of its pen stylus whereby in rest position this wire protrudes through the pen tip bottom and either by hand or by longitudinally shaking of the pen or by resting of the pen tip on the writing surface, the wire can be more or less retracted into the ink passageway.

FIELD OF THE INVENTION This invention is such as to encompass all pens be they for drafting or scribing and is particularly adapted to pens in which the reservoir of ink comprises an integral portion of the barrel defining the pen.

SUMMARY OF THE INVENTION According to the present invention, the writing pen comprises a housing which also serves as an ink reservoir. This housing has a pen tip, communicating with the housing via capillary passage. An integrated reservoir vent stem is located in the housing which is connected to a cleaning wire, said wire extending into the capillary passage, the top of the vent stem being connected to a manually operable knob protruding through the top of the pen. An upper and a lower compression spring acting upon the combination of vent stem and cleaning wire housing provides a balanced rest position for this combination with the cleaning wire balanced within the capillary passage or even protrudes through the pen tip bottom. In longitudinal downward knob position the cleaning wire delinitely is forced to pen tip bottom protruding position. In longitudinal upward position of the knob the cleaning wire is retracted from the cleanng channel into the ink reservoir chamber.

DESCRIPTION OF THE DRAWINGS FIG. 1 is a view in side elevation of the stylographic writing pen according to the invention;

FIG. 2 is an .enlarged fragmentary vertical sectional view of the writing nib of the pen according to FIG. 1, with the cleaning wire housing in its balanced rest position, protruding through the pen tip bottom;

FIG. 3 is an enlarged fragmentary vertical sectional view of the writing nib of the pen according to FIG. 1, with the cleaning wire housing forced to its downward position and the cleaning wire protruding through the pen tip bottom;

FIG. 4 is an enlarged fragmentary vertical sectional view of the writing nib of the pen according to FIG. 1, with the cleaning wire housing urged to its upward position and the cleaning wire retracted into the ink chamber;

FIG. 5 is an Aenlarged fragmentary vertical sectional view of the writing nib of the pen according to FIG. 1, with the cleaning wire housing in its balanced rest position and the cleaning wire urged upwards through the contact of pen tip bottom and writing surface;

FIG. 6 is a transverse sectional view of the writing pen taken along section lines 6 6 of FIG. 2;

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FIG. 7 is an enlarged fragmentary vertical sectional view of a modified writing nib of the pen according to the invention with the cleaning wire housng in balanced rest position;

FIG. 8 is an enlarged transverse sectional view of the writing nib taken along lines 8 8 of FIG. 7;

FIG. 9 is an enlarged transverse sectional view of the writing nib taken along lines 9 9 of FIG. 7;

FIG. 10 is an enlarged transverse sectional view of the writing nib taken along lines 10 10 of FIG. 7;

FIG. 11 is an enlarged transverse sectional view of the writing nib taken along lines 11-11 of FIG. 7;

FIG. 12 is an enlarged fragmentary vertical sectional view of another vent system being used in the writing pen according to the invention;

FIG. 13 is an enlarged vertical cross section of still another vent system being used in the Writing pen according to the invention;

FIG. 14 is an enlarged transverse sectional view of the writing nib taken along lines 14 14 of FIG. 13.

DESCRIPTION OF THE PREFERRED EMBODIMENTS As is shown in FIG. 1, pen 10 consists of barrel 12, which also serves as the ink reservoir for the ink 14, writing nib 16 and the pen tip 18. The barrel 12 is provided with the cap 20, in which the vent system 22 is located. Cleaning wire 24, which extends through pen tip 18, is longitudinally movably connected to the cleaning wire housing 26. Compression spring 28 is located in the lower part of the barrel 12 between the writing nib 16 and the spring base 30 of the housing extension 32. This compression spring 34 is located in the top of barrel cap 20 between cap top 36 and the spring base 38 of the vent stem 40 and provides in opposition to the lower compression spring 28, the longitudinally balanced rest position of the cleaning wire housing 26 and the vent stem 40, which stem protrudes with its valve part 42 through the vent opening 44 of the vent housing 46 to inside the ink reservoir (barrel) 12 and urges its lower end 48 against the top 50 of the housing extension 32. Such balanced rest position pertains, so long as no longitudinally compressive forces are applied on the vent stem 40 via projection knob 52, which protrudes through an opening in the top 36 of cap 2.0. The barrel cap 20 is, by means of the screw thread 54, leak-free attached to the barrel 12 and is removable to provide the lling with ink of the barrel 12. The vent housing 46 is by means of screw thread 56 leak-free attached to the cap 20 and can be removed for cleaning the interior of the cap 20. The vent housing 46 is provided with ink passages 58 which radially run from the vent opening 44 to the lower housing end 60, and which ink passages 58 provide an ink free vent system 22 to enable proper venting of the barrel 12.

In FIGS. 2, 3, 4 and 5 enlarged fragments of the writing nib 16 indicate the longitudinal positions of the cleaning wire 24 and the wire housing 26. The cleaning wire 24 is connected to the weight 62. This weight has a pin 64 which pin transversely protrudes on both sides through the weight 62 and in which ends 66 and 68 are movable in the longitudinally extending slots 70 and 72 of the sides 74 and 76 of the housing 26. The cleaning wire is movable through the ink passageway 78 of the pen tip 18 and in the position of FIG. 2, protrudes through the inclined pen tip bottom 80; bottom 82 of weight 62 resting upon pen tip top 84.

As indicated in FIG. 3, the wire housing 26 is urged downwardly to its downward position against the pressure of spring 28, forcing the cleaning wire 24 to protrude through the pen tip bottom 80, as is required during the starting operation of the pen by hand or for required cleaning of the ink passageway 78.

As is shown in FIG. 4, the wire housing 26 is being urged to its top position, which is achieved if, after the downward thrust of the knob 52 (FIG. l) by hand, against the force of the strong compression spring 28 to its lowest position, the knob suddenly is released. The wire housing 26 and vent stem 40 then react, under the force of spring 28, upwardly against the relatively weak pressure of low tension spring 34, whereby the build up of speed by the upward movement, together with the weight (mass) of the housing 26 and stem 40 provides such momentum, that the upward moving of the housing 26 proceeds beyond the rest position to the top position (upper limit) after the upward thrust of spring 28 on the housing 26 is ended. The cleaning wire 24 is thereby retracted in the ink chamber 86, providing escape of ink 14 from the chamber 86 into the passageway 78 for cleaning purposes of the passageway.

As shown in FIG. 5, with the housing 26 in its rest position, the cleaning wire 24 is forced upward with the weight bottom 82 removed from the pen tip top 84, if during writing the pin tip bottom 80 moves over the writing surface 88. As soon as contact between pen tip bottom y80 and writing surface 88 ends, then the cleaning wire automatically moves back to its downward position as indicated in FIG. 2.

lIn FIG. 6, as shown, for the purpose of having both inclined pen tip bottom 80 and inclined wire bottom 90 aligned, the pin ends 66 and 68 also are guided in the grooves 92 and 94 of the barrel 12.

In FIG. 7, a modified writing nib 16 is presented, whereby the nib 16 is provided with and according to the center of the barrel 12' offset nib reinforcement 100. The cleaning Wire 24 is attached tothe weight 62', which said weight is provided with the transverse arm 102, the arm being locked in slot 104 of the housing 26'.

The weight 62 is longitudinally movable in guide groove 106 of barrel 12 to provide alignments of both inclined pen tip bottom 80 and Wire bottom 90' as is also shown in FIG. 9.

In FIG. 8, the rectangular prole of housing part 108 is shown which said part is longitudinally movable in the bottom recess 110 of the barrel 12'.

FIGS. and l1 show the respective transverse profiles of writing nib 16 and reinforcement 100. Venting of the barrel 12 (FIG. l) takes place in the upward position of the vent stem 40, whereby the recessed lower stem part 112 only partly seal off the vent opening 44.

In FIG. l2, another vent System 22" in rest position is shown, whereby the venting of the barrel 12l as ink reservoir takes place in the downward position of the vent stem 40, the recessed upper stem part 114 only partly sealing off the vent opening 44".

In FIGS. 13 and 14 a modied pen 10" is shown, whereby another type of venting is being used. However, here also the same functions for the vent stem 40 to provide longitudinal displacement of the cleaning wire 24, which is connected with the wire weight 62".

The upper part of the wire weight 62" is provided with two side portions 116 and 118. The lower part of the flat sided vent stem 40" is positioned in between these two portions 116 and 118 and is provided with slot 70. The pen 64" transversely protrudes through both portions 116 and 118 and through slot 70". With this construction limiting longitudinal upward and downward movements of the cleaning wire 24" and weight 62 against stem 40" is provided to enable the same possible wire displacements as is described in foregoing FIG. 5.

The vent system 22", which is being used, is described in the Bok patent application Stylographic Writing Pen With Vented Reservoir Within the Writing Nib, led Apr. 23, 1969 (Ser. No. 818,712) now abandoned, whereby instead of the illustrated blade spring construction 120, 122 and 124 other constructions for the lower and upper springs such as wired springs can be used. Hereby venting of the ink reservoir, which is mainly part of the writing nib 16" occurs in the shown rest position for the vent stem 40 with open vent 44". By moving the knob 5 which protrudes through the longitudinal slot 126 of the side wall of the vent housing, midway to its top position, closing of the vent opening 44 takes place by means of the valve part 130 of the vent stem 40".

Other profiles of the vent stem 40" are possible as they are within the scope of the invention.

I claim:

1. A Stylographic pen including:

(A) a barrel;

(B) an ink reservoir having a venting passage in its upper portion and contained within said barrel;

(C) a vent stem reciprocable within said barrel so as to extend through said venting passage and into said reservoir;

(D) a pen tip supported at the end of the barrel and communicant with said reservoir via an ink capillary passageway;

(E) a cleaning wire engageable with the end of said vent stem within said reservoir and extending into said ink capillary passage, said cleaning wire being longitudinally displacable within said passage upon shaking of said pen.

2. Stylographic pen as in claim 1, wherein the connection between vent stem and cleaning wire is suspended to provide in the writing position of the pen such a thrust on the cleaning wire as to remove the cleaning wire longitudinally from the vent stem over a limited distance.

3. Stylographic pen as in claim 2, in which the cleaning wire is secured to a weight which is reciprocably supported within the vent stem to enable longitudinal displacement of the cleaning wire against the vent stern.

4. Stylographic pen as in claim 3 including a lower compression spring within said barrel, the spring acting as base whereupon the vent stern rests under the provision of a rest position for the vent stern -wherein the cleaning wire is forced to protrude through the pen tip, and whereby downward movement of the vent stem from rest position is possible against the upward thrust of said lower compression spring.

5. Stylographic pen as in claim 4, including: an upper compression spring, supported in said barrel against the vent stem, whereby upon longitudinal displacement of the vent stem, said upper compression spring provides a downward thrust upon said vent stem.

6. Stylographic pen as in claim 5, the lower and upper compression springs provide a balanced rest position for the vent stem wherein the cleaning wire may protrude through the pen tip bottom.

7. Stylographic pen as in claim 6, including: a venting segment of the stem and a scraper, supported in the barrel above said vent, over which scraper during a longitudinal movement of the vent stem, at least part of the venting segment of the vent stern slides.

8. Stylographic pen as in claim 7 whereby in the balanced rest position of the vent stem the vent is closed and a longitudinal upward displacement of the vent stem from this rest position provides the opening of said vent passage.

9. Stylographic pen as in claim 7, in which the vent stem is configured in part of reduced cross section so that in balanced rest position of the vent stem, the vent is closed and lwhereby a longitudinal downward displacement of the vent stem from said rest position, the stem opens said vent passage.

10. Stylographic pen as in claim 7 in which a portion of the vent stem is exposed in the balanced rest position, so that the corresponding vent passage is open and whereby upon partial upper displacement from the rest position, the top portion of the vent stem closes the vent passage.

11. Stylographic pen as in claim 10, the venting segment having such minimal length, that in ultimate depression thereof, the scraper positions adjacent said venting segment.

12. Stylographic pen as in claim 11, the venting segment having such length that in top position of the stem the scraper is adjacent said venting segment.

13. Stylographic pen as in claim 12, whereby the top compression spring comprises part of the scraper as an upper extension thereof.

14. Stylographic pen as in claim 13, whereby the lower compression spring is part of the scraper as a lower extension thereof.

References Cited FOREIGN PATENTS 14,093 6/1896 Great Britain 401-259 LAWRENCE CHARLES, Primary Examiner 

